added collectibles support

assets/levels/gurke.lvl

@@ -9,9 +9,9 @@ Background: background-orange
    # ######## ###   
               #     
    ############ #   
-   #          # #   
+   #        o # #   
    # # ######## #   
-   # #              
+   # #   o          
    # ############   
                     
                     

assets/loader-levels.go

@@ -20,13 +20,14 @@ var Tiles = InitTiles()
 // Tile:  contains  image, identifier  (as  used  in level  data)  and
 // additional properties
 type Tile struct {
-	Id         byte
-	Sprite     *ebiten.Image
-	Class      string
-	Solid      bool
-	Player     bool
-	Renderable bool
-	Velocity   bool
+	Id          byte
+	Sprite      *ebiten.Image
+	Class       string
+	Solid       bool
+	Player      bool
+	Renderable  bool
+	Velocity    bool
+	Collectible bool
 }
 
 func NewTilePlayer() *Tile {
@@ -50,6 +51,17 @@ func NewTileBlock(class string) *Tile {
 	}
 }
 
+func NewTileCollectible(class string) *Tile {
+	return &Tile{
+		Id:          'o',
+		Sprite:      Assets[class],
+		Class:       class,
+		Solid:       false,
+		Renderable:  true,
+		Collectible: true,
+	}
+}
+
 // used to map level data bytes to actual tiles
 type TileRegistry map[byte]*Tile
 
@@ -77,6 +89,7 @@ func InitTiles() TileRegistry {
 		' ': {Id: ' ', Class: "floor", Renderable: false},
 		'#': NewTileBlock("block-grey32"),
 		'S': NewTilePlayer(),
+		'o': NewTileCollectible("collectible-orange"),
 	}
 }